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  1. #include <iostream>
  2.  
  3. void swapPointers(double*& num1, double*& num2) {
  4.   double* temp = num1;
  5.   num1 = num2;
  6.   num2 = temp;
  7. }
  8.  
  9. int main() {
  10.     double a = 1.0f;
  11.     double b = 5.0f;
  12.     double* pa = &a;
  13.     double* pb = &b;
  14.     swapPointers(pa, pb);
  15.     std::cout << *pa << " " << *pb << std::endl;
  16.     std::cout << a << " " << b << std::endl;
  17. }
Success #stdin #stdout 0.01s 2680KB
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Standard input is empty
stdout 
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https://ideone.com/w4k9mV
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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